Interesting breakdown for how all of them score their goals. Matthews is the definition of consistent, Ovechkin is very volatile, and Pastrnak is a blend of the two.
Yep Ovi have had two slumps now before his hattrick period when he came back in to the scoring race and now right after it. Still its a bad timing for him with 5 zero goals game in a row. Before that he had 53% and had 28 zero goal games. 28 is the same as Pastrnak had 5 games ago and Matthews where at 27 zero goal games five games ago. He also has 3 goals less to distribute so it isn't a perfect comparison.
Like if you compare to Draisaitl he has 34 goals and 8 of them is two goal games and the rest of the goals came in 1 goal games. He ends up with 57% zero goal games, but he has 9 goals less than Matthews. So is he a more streaky player or is it just that he have not been able to score as much as Matthews this year. If Draisaitl had 9 more and 5 of the 9 was distributed in games he didn't score he would be at 48% with Matthews. It gets even more clear when you compare with a 20 goal player. They are not necessarily more streaky than Matthews they are just worse goalscorers or have been worse this year.
In Ovi's 3 last seasons close to 50 had the following amount of 0 goal games.
15/16 - 49%
17/18 - 52% (Matthews had 53% zero goal games, but a pace of 45 goals to Ovi's 49 makes it even)
18/19 - 56% (Matthews had 59% zero goal games, but a pace of 45 goals to Ovi's 51 in 81 makes it close)
So he's not a particularly streaky player. Matthews have 48% this year, but thats with a pace of 58 goals. Ovi had 50 in 79 games in 15/16 (52 goal pace) so with the same pace as Matthews he would have had more goals to distribute and would have had fewer 0 goal games and that would make his % go down. For example if 3 of the 6 extra goals Matthews is on pace for came in games Ovi had 0 goals and the rest in games he already had scored he would be at 46% in 15/16.